Apparatus for filtering water.



Patented .lune I9, |900. C. L. DEUTSCH.

APPARATUS FOR FILTERING WATER.

2 sheets-sheet l.

(Applicatinn led July 19, 1898.)

(No Model.)

,THE Nonms Pneus ou.. moro-umn., WASHINGTON. o. cA

Patented lune I9, |9110.`

2 Sheets-Sheet 2.

mmc,

` No. 65l,833.

' C. L. DEUTSCH.

APPARATUSFDR FILTEBING-WTER (Application filed July 19, 1898,)

(No Model.)

nonms P i UNITED STATES NPATE'NT EFICE. f

CLAUDE L. DEUTSCH, or ELIZABETH, NEW JERSEY, ASSIGNOR To w. M. DEUTSCH, or SAME PLACE.

APPARATUS FOR FILTERING WATER.

SPECIFICATIN.formng part of Letters Patent No. 651,833, dated June 19, `1900.

Application filed July 19, 1898.

To @ZZ whom t may con/cern:

. Be it known that I, CLAUDE L. DEUTSCH, a citizen of the United States, residing at Elizabeth, county of Union, and State of New Jersey, have invented certain new and useful Improvements in Apparatus for Clarifying Water, fully described'and represented in the followingspecification andthe accompanying drawings, forming a part of the same.

In the filtration of water with the use of a coagulant it is found that if the coagnlant be introduced into the stream of water iowing to the filter and the coagulant, with all the impurities in the water,is caught on the filterbed the filter becomes rapidly clogged and requires frequent washing,e ntailinga considerable expense,because of the necessity of usingin the washing operation filtered water.

It has been proposed heretofore to reduce the amount of coagulant required by the use of settling-basins made a part of the filtertank itself. This has been found undesirable because, among other reasons, of the limited space available for the purpose, andI now propose to provide filtering apparatus with settling-basins placed between the point of introducing the coagulant into the water and the iilter-chamber and separate from and independent of the latter, the same consisting of a number of compartments, one or more of which may be used for settling while the water is being drawn out of the other.

My invention further relates to the sandvalves employed for preventing the passage of sand out of the filter-chamber into the filtered water. Heretofore it has been usual to make these valves with a considerable size of surface and a small opening communicating between them and the filtered-water pipe. It has been thought necessary to make this communicating opening small in order to secure a uniform flow of water throughout the area of the bottom of the filter and to prevent the water establishing a channel through a limited number of the valves. The result has been that sediment lodged in these valves during the washing operation when unfiltered water was used for washing and that, owing to the small size of the opening between the valves and the filtered-water pipe, this sediment was not readily flushed out by the fil- Senai No. 686,324. KNO man.)

tered water that passed into the valves. It yis one of the objects of my invention to overcome this difficulty by changing the formation of the valves, and I secure it by making the valve of substantially uniform size throughout, so that it shall have .a comparatively-large communicating opening with the filtered-water pipe, and by reducing the number of perforations in the valve itself, in order in this manner, instead of, as formerly, by limiting the size of the opening between the valve and the filtered-water pipe, to control the flow of the water through the valves and secure the distribution of the flow over the entire area of the filter-bottom. I find, also, that it isan advantage to place valves of this construction upon the top rather than upon the side of the filtered-water pipes, sincethere is greater freedom with regard to the size and location of the valves when so placed, and therefore a more perfect distribution of the water can be secured. The shape of'these valves is capable of considerable variation. Thus they may be made cylindrical or rectangular or of any other polygonal shape.

In the drawings annexed, forming part of `this specification, Figure l is a sectional view of the filter embodying my improvements. Fig. 2 is a plan view of the same. Fig. 3 is a section al view of a portion of one of the pipes, showing the valve attached, on a largel scale; andhFig. 4 is a plan view of a filtering apparatus in which my method is employed. Fig. 5 is a sectional side view of a tank.

Referring to the drawings, A is va ltertank, B a supply-pipe, and C the exit-pipe for filtered water. C connects with the iltered-water pipe P in the bottom of the filter, which latter is provided with branch pipe p. These pipes p are provided with perforated nipples or strainers D, which are preferably attached to the pipes by screw-threads,as shown. A preferable position for these nipples, in general, is on the upper surfaces of the pipes; but I find it advantageous to place them horizontally and in an angular position with reference to the side walls of the chamber at the ends of the pipes, as shown in the drawings, as thereby a greater iushing action upon the interior of the filter-chamber is se- IOO cured, and thereby the sediment lodged upon the-interior of the chamber is more readily detached. The pipes p may, if desired, be provided with shoulders H for the reception of these angularly-plaeed nipples.

The ilter may be Washed by a reverse eurrent of filtered water through C er by arefA verse current of unfiltered Water through the v connecting=pipe R. Air for aeration is forced in at the proper time through pipe vS.

Referring to Fig. 4, E is a coagulant-tank.' lF F F are three storage-reservoirs, through any or all of which the -Water maybe diree'ted, by means of .Valves G, on its Way to the ii'lterchamber A. These tanks are used for set'- tling intermittently, one or more of them be-V the exit of sediment with the settled Water is preventedkAfter the clear Water has been drawn off the sediment is removed through the drain-pipe N.

f1. In an apparatus for elarifying water, the combination of a water-supply pipe, a coagulant-tank, a filter, and two or more "sediment,-

ing-basins separate from andindependentof the filter-tank .and 'placed between the filter-1 tank and the point Where the eoagu1antisin--. troduced into the stream of water so as to re.v

oeive the Water after it has been charged with ooagulant and discharge the same after itV has been sediinented to the inter, and ineens whereby the water may be directed into .and taken from one or the other sedimentipgbaein at will, substantially as described,

2. In. a iilter, a iiltered-Water pipe provided with sand-valves made of vertical perforated tubes of substantially-uniform size throughont and in Whieh the opening between the tube and the ltered-water pipe is of substantially the same size as the tube itself and in which the perforations opening from the tube to the bed are of such a number as to properly limit the ow of water through the valve, substantially as described.

3. The combination of a filter-chamber, a supply-pipe,a filtered-Water pipe, vertical perforated nipples of substantially-uniform size throughout their length, and means for attaohing the nipples to the supply-pipe, Substantially as described;

4. The combination of a ilterlehamber, as A, a snpplyepipe, as B, ilteredfvvater pipe, as e provided with branch pipes, as p, and ver# tical vperforated. nipples of substantially the same length and of substantially-uniform size throughout their length made separate from the pipes p and adapted to be secured thereto, as ,D, substantially .as described.

5. In a iilten'thejeombination of a .filtered- Water pipe, as P, and the branch pipes, as 19 provided at their ends with perforated nipplee inclined to lthe branch' pipes and anguvlarly plaeed with reference to the side walls of the iltenehamber, :whereby the scouring action of the wash-water is promoted, substantially as deseribed.

` 6, The ooinbination ,in a iilter, of a filteredwater pipe, as P, provided with a branch pipe,

as p, having a shoulder, as H, .and a nipple Qangularly placed with referenee to the filterwall and titted, into the shoulder, substantially as described..

-7.` The eonihfnation in a filteneharn-ber, 0f

iiltered-water -pipe,ras P, provided with branch pipes, asp, perforated nipples set into the -topeof the'branch pipes and perforated nipples Set at the ends of the branch pipes anden their sides and angularly placed with referenee to the ,filter-chamber wall, Substantiallyas deeorihedE lntestiinony whereof l have hereunto set my .hand in the presenee yofV two subscribing witnesses.

VCLAUDE L; DEUTSCH. Witnesses:

T. F. Kanon, NELLIE MAGUIRE.. 

